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From: awdorrin <awdorrin@gmail.com>
Newsgroups: comp.lang.ada
Subject: POSIX.Semaphores question
Date: Fri, 2 Dec 2011 07:43:01 -0800 (PST)
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Date: 2011-12-02T07:43:01-08:00
List-Id: <comp.lang.ada>

I'm using the Florist POSIX Libraries and have code that is similar to
the following:

In the spec file:

Sem_READY : Semaphore;
READY         : Semaphore_Descriptor;
pragma Export( Ada, READY, "ready");

Then in my body:

POSIX.Semaphores.Initialize( Sem_READY, 1);
READY := POSIX.Semaphores.Descriptor_Of( Sem_READY );

When executed, READY is always set to null.

If I run the code through GDB and print READY, it always displays 0x0.
However, if I call POSIX.Semaphores.Descriptor_Of( Sem_Ready )
I get the right address returned: (access posix.c.sem_t) 0x8321540

I have no idea why the assignment is failing and not generating an
exception....